Features Sour Service Capability Available in standard configurations that comply with NACE MR0175/ISO 15156. Versatility A wide range of trim options including Low Noise and Anti- Cavitation make the 370/371 a versatile control valve. Field Service Friendly No special tools are required to change or inspect trim. Top access makes in-line service easy. Pressure Drop Capabilities Model 370/371 control valves can shut off against inlet pressures equal to the ANSI/FCI 70.2 and IEC 60534-4 rating. Industrial High Quality External Coatings Our standard industrial high quality external coatings provide long lasting resistance to the harshest environments. Figure 1 Model 370 Control Valve The Model 370/371 control valve (Figure 1) is a heavy-duty globe style control valve. These valves are used in all kinds of demanding applications, including oil and gas production and chemical process industries. Emissions Reducing Packing Help prevent the loss of process media and reduce packing maintenance with the use of Dyna-Flo s Live Loaded PTFE, graphite, and KALREZ packing systems. Model 370/371 control valves are balanced cage guided, single port valves that can be used for either throttling or on-off control of either liquids or gasses. Model 370/371 control valves are manufactured to a high level of quality specifications to ensure superior performance and customer satisfaction. 1
SPECIFICATIONS Configurations The Model 370/371 control valve is a high capacity single port, globe style valve, with a bolted type bonnet. The standard valve plug action is push down to close. Consult your Dyna-Flo sales office for other available configurations. Sizes and Connection Styles Models: 370 & 371 Size: 12, 14, and 16 Rating: ASME 150 / 300 / 600 Connections: RF Approximate Valve Body and Actuator Weights Refer to Table 2. Materials Body and bonnet material options include: LCC (A350 LF2/A105 Dual Grade optional bonnet material) WCC (A350 LF2/A105 Dual Grade optional bonnet material) CF8M (A182 F316 optional bonnet material) Refer to Tables 5 & 6 for typical construction materials. Refer to Table 7 for trim selections. Maximum Inlet Pressures and Temperatures Flanged valves consistent with ASME Class rating as per ASME B16.34, unless limited by material, pressure or temperature limitations. Maximum Pressure Drops Maximum pressure drop is the same as maximum inlet pressure unless otherwise rated by a specific trim construction. Standard Shut-off Classifications In accordance with ANSI/FCI 70.2 and IEC 60534-4 Model 370 Metal Seat: Class V Standard. Class IV Optional. Model 370 Anti-Cavitation 2 Stage: Class V Standard. Model 371 Metal Seat: Class IV Standard. Flow Direction Flow Down (Standard) Low-Noise Trim - Flow Up Anti-Cavitation Trim - Flow Down Cross-Section of the Model 370/371 Control Valves Refer to Figures 3 & 4. Characteristics, Port Diameters, Stem and Yoke Boss Refer to Table 1. 4 to 8 inch (102 to 203 mm) Available Plug Travel. Packing Type and Examples The Standard packing is PTFE V-ring. Live-loaded low emission, graphite and other packing arrangements are available. Refer to the Model Builder and Figure 5. Valve Sizing Coefficients For standard coefficients at maximum travel, refer to Table 9. For full list of coefficients refer to document P-CVSM. For more information and other options contact your Dyna-Flo sales office. Dimensions Valve Outline Dimension Diagram Refer to Figure 2. Valve Assembly Dimensions Refer to Tables 3 & 4. 2
Port Diameters, Stem and Yoke Boss Diameters Table 1 Valve Size 12 14 16 Characteristic Equal Percentage / Linear / Anti-Cavitation / Low Noise III Equal Percentage / Linear / Anti-Cavitation / Low Noise III Equal Percentage / Linear / Anti-Cavitation / Low Noise III Standard Yoke Boss Diameter (YBD) Port Diameter Stem YBD Inch mm Inch mm Inch mm 11.00 279 1.25 31.8 5.00 127 11.00 279 1.25 31.8 5.00 127 11.00 279 1.25 31.8 5.00 127 Approximate Valve Weights Table 2 Valve Size (inch) End Connection lb Kg 12 RF 3,100 1,410 14 RF 3,450 1,565 16 RF 3,800 1,720 Valve Assembly Dimensions A & B Inches (mm) (Refer to Figure 2) Table 3 Valve A End Connection B Size (inch) CL150 CL300 CL600 12 RF 29.00 (737) 30.50 (775) 32.25 (819) 13.00 (330) 14 RF 35.00 (889) 36.50 (927) 38.25 (972) 13.00 (330) 16 RF 40.00 (1016) 41.62 (1057) 43.62 (1108) 13.00 (330) Valve Assembly Dimensions C Inches (mm) (Refer to Figure 2) Table 4 Valve Size (inch) 12 14 16 STANDARD BONNET C MAX. TRAVEL 23.31 (592) 5.50 (140) 29.31 (745) 8.00 (203) 23.31 (592) 5.50 (140) 29.31 (745) 8.00 (203) 23.31 (592) 5.50 (140) 29.31 (745) 8.00 (203) 3
C B A Figure 2 Valve Assembly Dimensions 4
STEM PACKING STUD PACKING NUT BONNET STUD BONNET NUT BONNET GASKET CAGE GASKET BONNET DETAIL A 3 PIECE SEAL RETAINING RING BACKUP RING SEAL RING CAGE A BODY PLUG SEAL RING SEAT RING Figure 3 Cross-section of 370 Control Valve 5
STEM PACKING STUD PACKING NUT BONNET STUD BONNET NUT BONNET BONNET GASKET CAGE GASKET CAGE PISTON RING BODY PLUG CAP SCREW SEAT RING GASKET SEAT RING Figure 4 Cross-section of 371 Control Valve 6
SINGLE PTFE V-RING PACKING DOUBLE PTFE V-RING PACKING GRAPHITE PACKING PACKING FLANGE PACKING FLANGE UPPER STEM WIPER PACKING FOLLOWER UPPER STEM WIPER PACKING FOLLOWER PTFE V-RING PACKING SET WASHER SPRING PACKING BOX RING PTFE V-RING PACKING SET LANTERN RING PTFE V-RING PACKING SET GRAPHITE FILAMENT GRAPHITE RIBBON GRAPHITE FILAMENT LOWER STEM WIPER PACKING BOX RING LIVE LOADED KALREZ PACKING LIVE LOADED GRAPHITE PACKING LIVE LOADED PTFE PACKING O-RING O-RING O-RING PACKING FLANGE PACKING FOLLOWER VESPEL RING KALREZ RING VESPEL RING KALREZ RING VESPEL RING SPACER SPRING WASHERS GUIDE BUSHING COMPOSITE PACKING RING PACKING WASHER COMPOSITE PACKING RING PACKING FLANGE PACKING FOLLOWER ANTI-EXTRUSION RINGS LAMINATE PACKING RING LANTERN RING SPRING WASHERS PTFE V-RING PACKING SET LANTERN RING GUIDE BUSHING PTFE V-RING PACKING SET ANTI-EXTRUSION RINGS LOWER STEM WIPER PACKING BOX RING PACKING BOX RING LOWER STEM WIPER Figure 5 Sample Packing Arrangements 7
Typical Construction Materials and Temperature Limitations Table 5 Part Description Standard Construction Material O F Temperature Limitation O C LCC -50 to 650-46 to 343 Body / Bonnet CF8M -325 to 1000-198 to 593 WCC -20 to 800 (1) -29 to 427 (1) Bonnet Gasket N06600 / Graphite -325 to 800-198 to 427 Backup Ring S31600* Not Limiting Factors Cage Gasket N06600 / Graphite -325 to 800-198 to 427 Lantern Ring S31600* Not Limiting Factors Packing (Standard Bonnet) PTFE -50 to 450-46 to 232 Graphite -325 to 1000 (2) -198 to 538 (2) Packing Box Ring S31600* -325 to 1100-198 to 593 Packing Follower S31600* Not Limiting Factors Packing Flange 1018 / Plated -20 to 400-29 to 204 Packing Stud B8M -325 to 1100-198 to 593 Packing Nut 8M -325 to 1100-198 to 593 Retaining Ring S31600 Not Limiting Factors Seal Ring Glass / Moly filled PTFE / N10276-50 to 450-46 to 232 Piston Ring Graphite Not Limiting Factors (3) Spring S30400 Not Limiting Factors * All S31600 barstock is dual grade S31600/S31603 (316/316L). For temperatures above or below these standard temperatures consult Dyna-Flo. NOTES: 1 - Flanged valve bodies are limited to 700 O F (354 O C). 2 - Oxidizing service limited to 700 O F (371 O C). 3 - Oxidizing service limited to -50 to 1000 O F (-46 to 538 O C). 8
Table 6 Maximum Pressure / Temperature Ratings Psig (kpag) Material Pressure / Temperature Limitations Valve Body Material ASME Class -50 O F (-46 O C) -20 O F (-29 O C) 450 O F (232 O C) 150 290 (1,999) 290 (1,999) 185 (1,276) LCC 300 750 (5,171) 750 (5,171) 685 (4,723) 600 1,500 (10,342) 1,500 (10,342) 1,367 (9,425) 150 275 (1,896) 183 (1,262) CF8M 300 720 (4,964) 498 (3,434) 600 1,440 (9,928) 990 (6,826) 150 290 (1,999) 185 (1,276) WCC 300 750 (5,171) 685 (4,723) 600 1,500 (10,342) 1,367 (9,425) Trim Option and Temperature Limitations Trim Valve Plug Stem Cage Seat Ring Table 7 Temperature Limitation (3) Minimum Maximum L1 S41000 S20910 S17400 H1075 S17400 H1075-20 O F (-29 O C) 800 O F (427 O C) L2 (2) S31600 (1) / Alloy 6 Seat & Guide S20910 S31600 (1) / Chrome Plated S31600 (1) / Alloy 6 Hard Face -325 O F (-198 O C) 650 O F (343 O C) NOTES: (1) - All S31600 barstock is dual grade S31600/S31603 (316/316L). (2) - Metal trim parts compatible with NACE MR0175/ISO 15156. Environmental restrictions may apply. (3) - Refer to Body Material Temperature Limitations. 9
Body to Bonnet Bolting Temperature Limitations Table 8 Body Material Asme Class LCC 150/300/600 WCC 150/300/600 CF8M 150/300/600 Bolt/Nut Material Temperature Limitations Min. O F Max. O F Min. O C Max. O C B7/2H (1)(2) -50 650-46 343 B7M/2HM (3) -50 650-46 343 B7/2H (1)(2) -20 800-29 427 B7M/2HM (3) -20 800-29 427 B7 Fluorokote #1 / 2H Fluorokote #1-50 500-46 260 (Standard) (2) B8M/8M (1)(2) -325 800-198 427 B7M Fluorokote #1/ 2HM Fluorokote #1 (3) -50 500-46 260 NOTES: 1 - Standard non-nace option. 2 - NACE MR0175/ISO15156 Non-Exposed Bolting option (Bolting that is not directly exposed to sour environments and is not to be buried, insulated, equipped with flange protectors, or otherwise denied direct atmospheric exposure). 3 - NACE MR0175/ISO15156 Exposed Bolting option (Bolting that will be exposed directly to the sour environment or that will be buried, insulated, equipped with flange protectors, or otherwise denied direct atmospheric exposure). MAXIMUM SIZING COEFFICIENTS FULL PORT EQUAL PERCENTAGE CHARACTERISTIC GLOBE BODY VALVE FLOW DOWN Table 9 Valve Size Inches Port Inches (mm) Travel Inches (mm) Coefficient Percentage of Valve Travel 100% 12 11 (279) 5.50 (140) C V 1380 14 11 (279) 5.50 (140) C V 1397 16 11 (279) 5.50 (140) C V 1595 NOTE: For the complete list of sizing coefficients refer to catalogue P-CVSM. 10
Our Commitment to Quality Dyna-Flo is committed to continuous improvement. While all efforts have been made to ensure the accuracy of the content in this document, modifications or improvements to the information, specifications, and designs may occur at any time without notice. This document was published for informational purposes only, and does not express or imply suitability, a warranty, or guarantee regarding the products or services described herein or their use or applicability. Neither, nor any of their affiliated entities assumes responsibility for the selection, use and maintenance of any product. Responsibility for selection, use and maintenance of any product remains with the purchaser and end-user. 11
MODEL NUMBERING SYSTEM SAMPLE PART NUMBER: 370-BAFL-14P5-GE4 VALVE MODEL 370 370 371 371 FLANGE SIZE X VALVE SIZE B 12 X 12 INCH C 14 X 12 INCH D 16 X 12 INCH ASME RATING A 150 B 300 C 600 END CONNECTION F RF BODY MATERIAL L LCC W WCC M CF8M BOLTING - B7 / 2H (STANDARD) A B7M / 2HM B B8M / 8M K B7 FLUOROKOTE #1 / 2H FLUOROKOTE #1 L B7M FLUOROKOTE #1 / 2HM FLUOROKOTE #1 TRIM 1 L1 2 L2 TRAVEL 4 4 INCH 5 5.5 INCH 8 8 INCH PACKING STYLE P SINGLE PTFE V-RING (PRESSURE) J DOUBLE PTFE V-RING (PRESSURE) G SINGLE GRAPHITE (PRESSURE) V DOUBLE PTFE V-RING (VACUUM) R DOUBLE PTFE V-RING (VACUUM / PRESSURE) L LIVE LOADED PTFE V-RING (PRESSURE) 370 B A F L - 1 4 P YOKE BOSS SIZE H 5H (1-1/4 STEM) SEAL RING / PISTON RING C GLASS / MOLY FILLED PTFE / N10276 SEAL RING (MODEL 370) G GRAPHITE PISTON RING (MODEL 371) CHARACTERISTIC E EQUAL PERCENT L LINEAR A ANTI-CAVITATION 1 STAGE W LOW-NOISE III A1 G LOW-NOISE III A3 B LOW-NOISE III B1 H LOW-NOISE III B3 C LOW-NOISE III C1 J LOW-NOISE III C3 SHUTOFF CLASS 4 CLASS IV 5 CLASS V 5 G E 4 12